What is the nature of RX J0720.4-3125?

被引：27

作者：

Heyl, JS

Hernquist, L

机构：

[1] CALTECH, Pasadena, CA 91125 USA

[2] Univ Calif Santa Cruz, Lick Observ, Santa Cruz, CA 95064 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1998年 / 297卷 / 03期

关键词：

radiative transfer; stars; magnetic fields; neutron; X-rays;

D O I：

10.1046/j.1365-8711.1998.01799.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

RXJ0720.4-3125 has recently been identified as a pulsating soft X-ray source in the ROSAT all-sky survey with a period of 8.391 s. Its spectrum is well characterized by a blackbody with a temperature of 8 x 10(5) K. We propose that the radiation from this object is thermal emission from a cooling neutron star. For this blackbody temperature we can obtain a robust estimate of the object's age of similar to 3 x 10(5) yr, yielding a polar field similar to 10(14) G for magnetic dipole spin-down and a value of (P) over dot compatible with current observations.

引用

页码：L69 / L70

页数：2

共 10 条

[1]

HABERL F, 1997, A A, V326, P622

[2] THERMAL STRUCTURE OF MAGNETIZED NEUTRON-STAR ENVELOPES [J].